Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A display device comprising: a first base substrate comprising a display area and a non-display area; a drive layer on the display area of the first base substrate; a first connection pad on the non-display area of the first base substrate; a second connection pad at the non-display area of the first base substrate; an optical layer on the drive layer; and an encapsulating layer on the optical layer, wherein the non-display area of the first base substrate is bent so that the second connection pad is electrically coupled with the first connection pad.
This invention relates to a flexible display device designed to improve space efficiency and connectivity in electronic displays. The device addresses the challenge of integrating electrical connections in a compact form factor by bending a portion of the display substrate to enable direct electrical coupling between connection pads. The display device includes a first base substrate with a display area and a non-display area. A drive layer is positioned on the display area to control pixel elements, while an optical layer is placed over the drive layer to enhance visual performance. An encapsulating layer protects the optical layer from environmental damage. In the non-display area, a first connection pad and a second connection pad are provided. The non-display area is bent such that the second connection pad is electrically coupled with the first connection pad, eliminating the need for external wiring or additional connectors. This bending mechanism allows for a more streamlined and compact design, reducing the overall footprint of the display device while maintaining reliable electrical connections. The invention is particularly useful in applications where space constraints are critical, such as in foldable smartphones, wearable devices, and flexible displays.
2. The display device according to claim 1 , further comprising a touch sensor, wherein the touch sensor comprises a touch sensing electrode and a touch pad, and wherein the second connection pad is electrically coupled with the touch pad.
A display device includes a touch sensor integrated with a display panel. The touch sensor comprises a touch sensing electrode and a touch pad, which are used to detect touch inputs on the display surface. The touch pad is electrically connected to a second connection pad, which facilitates signal transmission between the touch sensor and external circuitry. This configuration enables the display device to support touch functionality while maintaining a compact and integrated design. The touch sensing electrode detects touch events, such as finger or stylus interactions, and converts them into electrical signals. The touch pad then processes these signals and relays them through the second connection pad to a controller or processor for further interpretation. This integration allows for seamless touch input detection without requiring additional external components, improving the device's efficiency and usability. The system ensures reliable touch sensing performance while minimizing space and complexity in the display assembly.
3. The display device according to claim 2 , wherein the second connection pad comprises: a first pattern on a surface of the first base substrate on which the first connection pad is located; a second pattern in a through hole passing through the first base substrate, and coupled with the first pattern; and a third pattern on a surface of the first base substrate that is opposite to the surface thereof on which the first pattern is located, the third pattern being coupled with the second pattern.
A display device includes a first base substrate with a first connection pad on one surface and a second connection pad that provides electrical connectivity through the substrate. The second connection pad consists of three interconnected patterns: a first pattern on the same surface as the first connection pad, a second pattern within a through hole that penetrates the first base substrate and connects to the first pattern, and a third pattern on the opposite surface of the first base substrate, which is electrically coupled to the second pattern. This configuration enables vertical electrical routing through the substrate, facilitating signal transmission between different layers or components of the display device. The through-hole structure allows for compact and efficient interconnections, reducing the need for additional wiring or external connections. This design is particularly useful in multi-layer display panels where space constraints and signal integrity are critical. The second connection pad's multi-layered structure ensures reliable electrical contact while maintaining structural integrity of the substrate.
4. The display device according to claim 3 , further comprising: a first conductive ball between the third pattern and the touch pad.
A display device with an integrated touch-sensitive interface addresses the challenge of combining high-resolution visual output with precise touch input in a compact form factor. The device includes a display panel with a conductive touch pad overlay, enabling touch detection. A conductive pattern is formed on the display panel, with a first conductive ball positioned between this pattern and the touch pad. This conductive ball establishes electrical contact, ensuring reliable signal transmission for touch sensing while maintaining structural integrity. The conductive pattern may be part of a larger array used for touch localization, where multiple conductive elements interact with the touch pad to detect touch coordinates. The conductive ball compensates for manufacturing tolerances and mechanical stress, preventing signal degradation or disconnection. This design is particularly useful in high-resolution displays where maintaining touch sensitivity without compromising visual quality is critical. The conductive ball's placement ensures consistent electrical coupling, enhancing durability and performance in portable or flexible display applications. The overall system integrates touch functionality seamlessly into the display stack, reducing thickness and improving responsiveness.
5. The display device according to claim 4 , further comprising: a second conductive ball between the first pattern and the first connection pad.
A display device includes a substrate with a first conductive pattern and a first connection pad. The first pattern is electrically connected to the first connection pad via a conductive ball. The conductive ball is positioned between the first pattern and the first connection pad to facilitate electrical connection. Additionally, a second conductive ball is placed between the first pattern and the first connection pad, further enhancing the electrical connection. This configuration improves reliability and conductivity in the display device by providing multiple conductive pathways. The display device may be part of a larger electronic system, such as a smartphone, tablet, or other display-equipped device. The use of conductive balls ensures stable electrical contact, reducing the risk of disconnections or signal degradation. The invention addresses challenges in maintaining consistent electrical performance in display devices, particularly in environments with mechanical stress or temperature variations. The conductive balls may be made of materials such as solder or conductive adhesives, optimized for durability and conductivity. The design ensures that the electrical connection remains intact even under repeated use or environmental changes.
6. The display device according to claim 4 , wherein the first pattern and the first connection pad directly contact each other.
A display device includes a substrate with a first pattern and a first connection pad formed on its surface. The first pattern and the first connection pad are positioned to directly contact each other, ensuring electrical connectivity without intermediate layers. This configuration improves signal transmission efficiency and reduces resistance in the display circuitry. The first pattern may be part of a conductive layer used for routing signals, while the first connection pad serves as an interface for connecting external components or internal circuits. The direct contact eliminates the need for additional conductive bridges or bonding materials, simplifying the manufacturing process and enhancing reliability. The substrate may be flexible or rigid, depending on the application, and the conductive materials used for the first pattern and connection pad are selected for compatibility with the display's operational requirements. This design is particularly useful in high-resolution or flexible display technologies where minimizing electrical resistance and maintaining structural integrity are critical. The direct contact between the first pattern and the first connection pad ensures consistent performance and durability under various operating conditions.
7. The display device according to claim 3 , further comprising: a first conductive ball between the first pattern and the first connection pad.
A display device includes a substrate with a first conductive pattern and a first connection pad. The first conductive pattern is electrically connected to the first connection pad via a first conductive ball. The first conductive ball is positioned between the first pattern and the first connection pad to facilitate electrical connection. The display device may also include a second conductive pattern and a second connection pad, with a second conductive ball between them. The conductive balls provide a reliable electrical connection between the patterns and the connection pads, ensuring proper signal transmission. This configuration is useful in display technologies where stable electrical connections are critical, such as in flexible or high-resolution displays. The conductive balls may be solder balls or other conductive materials that form a secure bond between the patterns and the connection pads. The device may also include additional layers or components, such as insulating layers or protective coatings, to enhance durability and performance. The use of conductive balls simplifies the manufacturing process and improves connection reliability compared to traditional bonding methods.
8. The display device according to claim 7 , wherein the third pattern and the touch pad directly contact each other.
A display device includes a touch pad with a first pattern and a second pattern, where the first pattern is electrically conductive and the second pattern is electrically insulating. The touch pad is positioned on a display panel, and the second pattern is aligned with a light-emitting region of the display panel to allow light to pass through. The device also includes a third pattern that is electrically conductive and positioned between the touch pad and the display panel. The third pattern directly contacts the touch pad, forming an electrical connection. This configuration enables the touch pad to detect touch inputs while maintaining display functionality. The third pattern may be part of a conductive layer that enhances signal transmission or grounding. The alignment of the second pattern with the light-emitting region ensures that the display remains visible through the touch pad. This design improves touch sensitivity and display clarity by optimizing the electrical and optical properties of the touch-sensitive display.
9. The display device according to claim 3 , further comprising: a conductive adhesive layer between the first pattern and the first connection pad.
A display device includes a substrate with a first pattern and a first connection pad, where the first pattern is electrically connected to the first connection pad. The first pattern is formed on a first surface of the substrate, and the first connection pad is formed on a second surface of the substrate opposite the first surface. The first pattern and the first connection pad are electrically connected through a via hole penetrating the substrate. The display device further includes a conductive adhesive layer positioned between the first pattern and the first connection pad to enhance electrical conductivity and mechanical stability. This configuration allows for reliable electrical connections in multi-layered display structures, addressing issues related to signal integrity and durability in flexible or high-density display applications. The conductive adhesive layer ensures consistent electrical contact while accommodating potential misalignments or thermal expansions, improving overall device performance and longevity.
10. The display device according to claim 3 , further comprising: a conductive adhesive layer between the third pattern and the touch pad.
A display device includes a touch-sensitive input system with improved electrical connectivity. The device addresses the problem of unreliable touch input due to poor electrical contact between a touch pad and underlying conductive patterns. The invention features a conductive adhesive layer positioned between a third conductive pattern and the touch pad. This adhesive layer ensures stable electrical connection, enhancing touch sensitivity and durability. The third pattern is part of a multi-layer conductive structure that may include additional patterns for signal routing or grounding. The touch pad itself is a transparent conductive layer, typically made of indium tin oxide (ITO) or similar material, allowing light transmission while detecting touch inputs. The conductive adhesive layer is formulated to maintain adhesion and conductivity over time, even under mechanical stress or environmental changes. This design is particularly useful in touchscreen displays for smartphones, tablets, and other electronic devices where consistent touch performance is critical. The invention improves upon prior art by reducing contact resistance and preventing signal degradation, leading to more accurate and responsive touch input.
11. The display device according to claim 2 , wherein the second connection pad comprises: a first pattern having a shape extending from the first connection pad; a second pattern in a through hole passing through the first base plate, and coupled with the first pattern; and a third pattern on a surface of the first base substrate that is opposite to a surface thereof on which the first pattern is located, the third pattern being coupled with the second pattern.
A display device includes a flexible base substrate with connection pads for electrical connections. The device addresses challenges in achieving reliable electrical connections in flexible displays, particularly where bending or folding may occur. The second connection pad in the device has a multi-layered structure to enhance durability and conductivity. It includes a first pattern extending from a first connection pad, providing an initial conductive path. A second pattern is formed in a through hole that penetrates the base substrate, creating a vertical conductive link. A third pattern is positioned on the opposite surface of the base substrate from the first pattern and connects to the second pattern, completing the conductive path across the substrate. This design ensures stable electrical connections despite mechanical stress, improving the device's reliability in flexible or foldable applications. The through-hole structure allows for efficient space utilization while maintaining robust connectivity. The patterns are arranged to minimize resistance and prevent disconnections, addressing common issues in flexible display technologies.
12. The display device according to claim 11 , wherein the first pattern faces the first connection pad, and wherein the third pattern faces the touch pad.
A display device includes a substrate with a first connection pad and a touch pad. The device has a first conductive pattern facing the first connection pad and a second conductive pattern facing the touch pad. The first and second patterns are electrically connected by a third conductive pattern. The first pattern is configured to electrically connect to the first connection pad, and the third pattern is configured to electrically connect to the touch pad. The device may include a second connection pad, with the second pattern facing the second connection pad. The first and second patterns may be formed on a first surface of the substrate, while the third pattern is formed on a second surface of the substrate. The first and second patterns may be electrically connected to the third pattern through vias in the substrate. The device may include a display panel with a touch sensor, where the first connection pad is part of the display panel and the touch pad is part of the touch sensor. The first and second patterns may be formed from a transparent conductive material, such as indium tin oxide (ITO). The third pattern may be formed from a metal material, such as copper or aluminum. The device may include a flexible printed circuit board (FPCB) connected to the first connection pad and the touch pad. The FPCB may include a fourth conductive pattern electrically connected to the first connection pad and a fifth conductive pattern electrically connected to the touch pad. The device may include a driver circuit configured to drive the display panel and the touch sensor. The driver circuit may be connected to the FPCB. The device may include a housing configured to house the display panel, the touch sensor, and the FPCB. The housing may include a first opening configured to ex
13. The display device according to claim 12 , further comprising: an elastic member between the first pattern and the first connection pad, and configured to maintain a bent shape of the first substrate.
This invention relates to display devices, specifically addressing the challenge of maintaining a stable bent shape in flexible display substrates. The device includes a first substrate with a first pattern and a first connection pad, where the first pattern is electrically connected to the first connection pad. An elastic member is positioned between the first pattern and the first connection pad to ensure the first substrate retains its bent configuration. The elastic member provides structural support, preventing deformation or unintended straightening of the substrate, which is critical for maintaining display performance and durability in flexible or foldable displays. The first pattern may include conductive traces or electrodes, while the first connection pad facilitates electrical connections to external components. The elastic member's elasticity and placement ensure consistent mechanical stability, accommodating repeated bending cycles without compromising electrical connectivity or structural integrity. This design is particularly useful in applications requiring flexible or curved displays, such as foldable smartphones, wearable devices, or rollable screens, where maintaining a precise bent shape is essential for functionality and longevity. The invention improves upon prior art by integrating an elastic member to actively support the bent substrate, addressing issues like stress concentration and material fatigue that can degrade performance over time.
14. The display device according to claim 13 , further comprising: a conductive ball between the third pattern and the touch pad.
A display device with an integrated touch-sensitive interface addresses the challenge of combining visual display functionality with precise touch input detection. The device includes a display panel for visual output and a touch pad for detecting touch inputs. The touch pad is positioned adjacent to the display panel and includes a first pattern and a second pattern, each formed from conductive material. These patterns are electrically connected to a controller that processes touch signals. The first pattern is configured to detect touch inputs in a first direction, while the second pattern detects touch inputs in a second direction, enabling multi-directional touch sensing. The touch pad is further connected to a flexible printed circuit board (FPCB) that transmits touch signals to the controller. To enhance electrical connectivity and signal transmission, a conductive ball is placed between a third pattern on the touch pad and the touch pad itself. This conductive ball ensures reliable electrical contact, improving signal integrity and touch sensitivity. The device may also include a protective layer over the touch pad to prevent damage while maintaining touch responsiveness. This design integrates touch functionality directly into the display, reducing the need for separate touch layers and improving overall device thinness and durability.
15. The display device according to claim 13 , further comprising: a conductive adhesive layer between the third pattern and the touch pad.
A display device includes a touch-sensitive input system with a touch pad and a flexible printed circuit board (FPCB) connected to the touch pad. The FPCB has a first pattern and a second pattern, where the first pattern is electrically connected to the touch pad and the second pattern is electrically connected to a display panel. The device also includes a third pattern on the FPCB, which is electrically connected to the second pattern and extends toward the touch pad. A conductive adhesive layer is positioned between the third pattern and the touch pad, ensuring electrical connectivity. This configuration allows the touch pad to receive touch inputs while maintaining electrical connections to both the display panel and the FPCB. The conductive adhesive layer enhances reliability by providing a stable electrical interface between the third pattern and the touch pad, reducing signal loss and improving touch sensitivity. The design is particularly useful in flexible or foldable display devices where maintaining consistent electrical connections during bending or folding is critical. The system ensures seamless integration of touch functionality with the display panel while minimizing structural complexity.
16. The display device according to claim 2 , wherein the touch sensor further comprises: a second base substrate comprising a sensing area corresponding to the display area, and a non-sensing area corresponding to the non-display area; and a sensing line electrically coupling the touch sensing electrode with the touch pad, wherein the touch sensing electrode is on the sensing area, and wherein the touch pad is on the non-sensing area.
A display device with an integrated touch sensor is designed to improve touch detection accuracy and reliability. The device includes a display panel with a display area for visual output and a non-display area surrounding it. The touch sensor is structured to enhance performance by separating sensing and non-sensing regions. The touch sensor includes a second base substrate with a sensing area aligned with the display area and a non-sensing area aligned with the non-display area. A touch sensing electrode is positioned on the sensing area to detect touch inputs, while a touch pad is located on the non-sensing area to facilitate electrical connections. A sensing line electrically connects the touch sensing electrode to the touch pad, ensuring signal transmission from the sensing area to the non-sensing area. This design optimizes touch sensitivity in the active display region while maintaining structural integrity in the peripheral non-display region. The separation of sensing and non-sensing areas reduces interference and improves overall touch responsiveness. The touch sensor's configuration ensures efficient signal routing and minimizes signal loss, enhancing the device's touch detection capabilities. This approach is particularly useful in modern touchscreen displays where precise and reliable touch input is critical for user interaction.
17. A display device comprising: a first substrate comprising: a base substrate comprising a display area and a non-display area, wherein the base substrate comprises at least one connection pad at the non-display area; a drive layer on the display area of the first substrate; an optical layer on the drive layer; and an encapsulating layer on the optical layer, wherein the non-display area of the first substrate is bent so that the at least one connection pad is indirectly electrically coupled with a touch pad of a touch sensor on a second substrate.
This invention relates to a flexible display device with an integrated touch sensor. The device addresses the challenge of integrating touch functionality in a compact form factor by bending a portion of the display substrate to connect with a separate touch sensor substrate. The display device includes a first substrate with a base substrate divided into a display area and a non-display area. The display area contains a drive layer for controlling pixel elements, an optical layer for modulating light, and an encapsulating layer for protection. The non-display area includes at least one connection pad. The non-display area is bent to indirectly electrically couple the connection pad with a touch pad of a touch sensor on a second substrate. This bending allows the touch sensor to be positioned on a separate substrate while maintaining electrical connectivity, enabling a thinner and more flexible display design. The touch sensor detects user input, while the display area provides visual output. The invention improves integration efficiency and reduces overall device thickness by eliminating the need for direct bonding between the display and touch sensor layers.
18. The display device according to the claim 17 , wherein the second substrate faces the first substrate.
A display device includes a first substrate and a second substrate, where the second substrate is positioned to face the first substrate. The device further includes a plurality of light-emitting elements arranged between the first and second substrates. Each light-emitting element has a first electrode, a second electrode, and a light-emitting layer between the electrodes. The first electrode is electrically connected to a first conductive layer on the first substrate, and the second electrode is electrically connected to a second conductive layer on the second substrate. The first and second conductive layers are configured to supply power to the light-emitting elements. The device also includes a first insulating layer between the first conductive layer and the first electrode, and a second insulating layer between the second conductive layer and the second electrode. The first and second insulating layers have openings that expose portions of the first and second conductive layers, respectively, allowing electrical connection to the electrodes. The light-emitting elements are arranged in a matrix, and the device may include a color filter layer to adjust the color of emitted light. The structure ensures efficient power distribution and light emission while maintaining device stability.
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August 18, 2020
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